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		<title>Object.prototype.toString.call()</title>
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			// Object.prototype.toString.call(2) // "[object Number]"
			// Object.prototype.toString.call('') // "[object String]"
			// Object.prototype.toString.call(true) // "[object Boolean]"
			// Object.prototype.toString.call(undefined) // "[object Undefined]"
			// Object.prototype.toString.call(null) // "[object Null]"
			// Object.prototype.toString.call(Math) // "[object Math]"
			// Object.prototype.toString.call({}) // "[object Object]"
			// Object.prototype.toString.call([]) // "[object Array]"
			// Object.prototype.toString.call(function () {}) // "[object Function]"
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